“I’ve been a veterinarian for 16 years, and I’ve never seen anything like this,” Veterinarian Brian Heuring told the morning news program. “It certainly looks just like a tail, but we did X-rays, and it’s all just skin.”

Steffen said even the vet was shocked by Narwhal’s appearance. Naturally, the pup was a huge hit online.

Heuring added that Narwhal is entirely healthy, should anyone wish to adopt him.

“I certainly do not see anything that’s causing any harm or complications,” he said. “The puppy couldn’t be any sweeter or happier. He’s really just an awesome puppy that brings awareness to the great work at Mac’s Mission.”